In 150 spins, about how often do you expect to land on a number less than 6? spinner is 1-8. theoretical probability. is the answer 94?

I don't know.  I'll have to figure it out.

Probability = 

       (number of successful possible results) / (total possible results) .

Total possible results for the spinner . . . 8
Successful ones (getting a  1, 2, 3, 4, or 5) . . . 5

Theoretical probability  =  5/8 .

So you expect (5/8 of 150) spins to be successful.

         (5/8 times 150)  =  93.75

Yes ! 
93  or  94  is a good answer.